Energy-loss probabilities for electrons, positrons, and protons in condensed matter

An ‘‘optical-data’’ model for describing the dielectric response function of a medium was introduced earlier to predict energy-loss rate and inelastic mean free path for low-energy (<10-keV) electrons and positrons. The model is used here to calculate energy-loss probabilities for electrons, positrons, and protons for use in Monte Carlo calculations or other theoretical simulations. Results for the cumulative interaction probabilities are illustrated using optical data for carbon.